Platinum temperature sensors
Platinum temperature sensors
The platinum temperature sensors are characterized by long-term stability, high accuracy over a wide temperature range, and compatibility. The sensors are available in packs of five. B+B offers a wide range of sensors, including the most common Pt100, Pt200, Pt500, and Pt1000 temperature sensors.
Due to the thin-film technology of platinum temperature sensors, they are particularly found in the automotive sector, white goods, air conditioning and heating technology, energy generation, mechanical and equipment engineering, as well as medical and pharmaceutical technology.
Yes, data sheets for all sensors are available online.
A platinum temperature sensor (e.g. Pt100 or Pt1000) is a resistance thermometer whose electrical resistance changes very precisely and reproducibly with temperature. Since platinum has an almost linear temperature coefficient and is chemically very stable, it is ideal for accurate and long-term stable measurements.
We offer digital temperature sensors, glass or ceramic wire-wound and thin-film platinum temperature sensors, various NTC sensors and special sensors, for example for measuring surface temperature or combined digital temperature and humidity sensors.
Platinum resistance thermometers can have different properties depending on their design, which is why different designs have been developed for different applications. Ceramic wire-wound platinum resistance thermometers consist of a fine platinum wire wound onto a ceramic substrate; they offer very high long-term stability and accuracy, but are more sensitive to vibrations. Thin-film PT100s consist of a thin platinum layer applied to a ceramic substrate and sealed with glass or ceramic; they are compact, robust and inexpensive. Glass PT100s use a platinum wire fused into glass, making them hermetically sealed, highly resistant to chemicals and particularly suitable for extreme environments. Overall, they differ mainly in terms of stability, robustness, size and cost.
The nominal resistance for temperature sensors is the resistance value that the sensor has at a specified reference temperature. For platinum resistance thermometers (e.g. Pt100 with 100 Ω or Pt1000 with 1000 Ω at 0 °C), 0 °C is always used as the reference, while for NTC sensors, the nominal resistance is usually specified at 25 °C (e.g. 10 kΩ NTC). The nominal resistance thus serves as a unique identifier for the sensor type and as a starting point for converting resistance into temperature.
Platinum temperature sensors are designated according to DIN EN 60751 with accuracy classes F 0.1 / F 0.15 / F 0.3, etc. F 0.15 corresponds to the former class A (±(0.15 + 0.002·|t|) °C), F 0.3 to class B (±(0.30 + 0.005·|t|) °C). F 0.1 stands for particularly high accuracy and corresponds approximately to the former 1/3 DIN B. For the end user, these classes indicate how precisely the sensor measures the actual temperature. The formulas can be used to determine the maximum deviation from the actual temperature.